Slugging or nailing machine.



. M. T. DENNE.

SLUGGING 0R NAILING MACHINE.

APPLICATION man SEPT. 22. 1914.

Patented Dec. 25, 1917.

2 SHEETSSHEET I.

Inventor. MurK Thomas Den-ne;

Wifnesses.

amwag.

byaaj 53M If WMM 1i M. T. DENNE;

SLUGGING 0R NAILING MACHINE.

APPLICATION FILED SEPT. 22, I914.

Patented Dec. 25, 1917.

2 SHEETSSHEET 2- lhvrfl'or. Mark T. Denne byizawfwu MARK THOMAS DENNE, OF RUSHDEN, ENGLAND.

SLUGGING OR NAILING MACHINE.

Specification of Letters Patent.

Patented Dec. 25, 1917.

Application filed September 22, 1914. Serial N 0. 863,024.

To all whom it may concern:

Be it known that 1, MARK THOMAS DENNE, a subject of the King of Great Britain and Ireland, residing at Rushden, Northamptonshire, England, have invented new and useful Improvements in and Relating to Slugging or Nailing Machines, of which the following is a specification.

This invention has reference to improvements in and relating to slugging or nailing machines and in particular to improved work feed mechanism.

My invention consists in improved mechanism whereby a work feed awl is made to reciprocate through a definite angle or distance in one planesay the horizontal-and is made to reciprocate at right angles to the aforesaid plane at certain times to engage and disengage the work so that the work will be fed forward a distance equal to the full horizontal movement of the awl or any less distance according to the adjustments made by the operator, outstanding characteristic features of the invention being that the awl carrier is actuated in its vertical movements by being coupled at predetermined times to a vertically reciprocating slug or nail driving bar and is controlled as to the extent of its feed movement by a rotatable cam which is provided with an adjustable portion adapted to be adjusted nearer to or farther from the axis around which the said cam rotates.

My invention is illustrated in the accompanying drawings Figure 1 being a side elevational view of the head of a slugging or nailing machine having my invention applied thereto and Fig. 2 a front elevational view on alarger scale of only my improved work feed mechanism.

Referring to the drawing the numeral 1 indicates the head or frame of the machine which is provided with bearings 2 in which a cam shaft 3 is journaled.

Mounted on the cam shaft is a cam disk l having a cam groove 10 in which a cam roll 10 secured to a vertically slidable driver bar 8 runs. The driver bar 8 is guided in its vertical reciprocating movements by a slide bar 9 carried by the frame 1 and the lower end of the driver bar carries the usual nail or slug driver 8 which passes in the well known manner through a guide 8".

It will be observed that the cam groove 10 is of such a form that it imparts two up and down movements to the driver bar 8 for every revolution of the cam shaft one such movement being longer than the other.

The longer of these movements e'lfects the driving of the slug or nail and the shorter one causes the awl to be entered into and raised from the leather or other material being operated on.

The awl 61 is clamped in a slide block 62 which is free to move vertically in a guide block 63 which latter is adapted to have horizontal movements imparted to it by a rocking lever 17 one end of which by a cam roll 64 engages a suitable cam 19 on the cam shaft 3.

The slide block 62 has a lug 65 which is adapted to engage in a slot 66 out in the driver bar 8 to thereby partake of the vertical movement of said bar during the time when the driver bar has imparted to it the shorter one of the vertical movements referred to.

The parts are so timed that the cam 19 operating the rocking lever 17 will cause the guide block to move horizontally until the lug 65 engages in the slot 66 in the driver bar.

Thereupon the driver bar will be made to descend causing the awl to enter the work. Thereafter the guide block 62 will be made to move a farther distance horizontally (the lug 65 entering farther into the slot 66) thereby feeding the work forward until the awl 61 is immediately below the driver 8. Then the driver bar 8 and with it the awl 61 will be raised and lastly the guide block 63 together with the slide block 62 and awl will be moved to their initial position which in the drawing will be on the extreme right hand end of the full stroke.

In order to vary the length of the feed stroke I make a part 9" of the cam 19 adjustable so that that part may be set to be nearer to or farther from the axis around which the cam 19 rotates. By this the lug 65 may be made to enter farther into the slot 66 before the driver bar 8 is made to descend and the awl therefore will enter the work at a point nearer to that at which it ultimately leaves the work and which is of course always in axial alinement with the driver 8.

The remaining part of the machine is illustrated merely to show exactly how all the different mechanisms are to be arranged relatively to each other.

In addition to the cam 4 the cam shaft also carries a cam 5 to operate wire cutting means and to also operate means (forming the subject of a divisional applicatioms'er'ial No. 57583, series of 1915, filed Oct. 23, 1915,) whereby when the machine is brought to rest, a horn will be lowered a fairly-considerable distance to enable work to be inserted or removed without trouble. Also a cam 6 whereby the horn is lowered at each revolution of this cam shaft only sufiiciently to enable the work to be fed forward and to operate a brake when the machine is'being stopped. The cam shaft also carries the usual driving pulley and clutch 7.

The wire from which the slugs are cut is carried on a drum or reel which may be supported in any desired suitable'position and the wire is led from the reel to between a pair of rollers only one of which viz. 20"is shown. The roller 20 acts as a feed roller and is serrated to exert a better grip on the wire. The other roller is carriedTon the eccentric end of a pin so that by partly rotating said pin in one directionthe roller car.-

ried by its eccentric end may be brought press the wire firmly against the feed roller 20, the pin being then secured by a nut or equivalent.

Only after the wire has passed the feed roll is it made to enter a channel in the front of the machine which channel'has a lemm able cover so that access may be had thereto and when it is desired to change the wire it is only necessary for the operator to slack the pin on the eccentric end of which the" roller referred to is carried when the wire may be drawn out at the top and another pin and its roller aga-in with a cam roller 22 en a in said cam b a D race, and said lever operates a rocking spindle 2% through gearing. The rocking spindle 2a in turn operates the roller 20 through gear and in a manner to be now described.

The end of the rocking spindle 24 at the front of the machine carries a disk 25 the face of which is formedwith ratchet teeth. Loosely mounted on said rocking spindle and impelled by-a spring toward the disk 25 is a pinion 27 also having ratchet teeth on one face adapted to engage those on the disk 26 and partly surrounding said pinion is a sleeve 28 which is formed with one or more inclined surfaces adapted to be en gaged by similar surfaces on a ring 30 which is adjustably secured to the disk 25 the arrangement being such that according to the portion. The pinion 27- is in engagement with a toothed wheel 27* the spindle of which carriesthefeed roll 20 so that by adjustment of the before mentioned mechanism any desired length of wire-up to the maximum within the compass of the ma I chine will be fed forward.

The wire cutting means comprises two parts one forming a continuation of the wire passage referred to and the other carried on a slide 36 also in continuation thereof. The slide is movable by means of a lever 38, rocker shaft 39, lever 40, cam roll 41 and the cam 5, and in its movement'the cutter carried thereby first shears off the wire and then transfers this sheared off end to belowthe driver which will then drive, it into the work. i

The cutter blocks are made removable so that they may be. changed according to the shape and size of wire to be used."

The edge gage may be of 'any suitable known construction but preferably it will be made according to the description in the specification of the British. Letters Patent No. 2&186A of 1906 granted'to fme.

The means whereby the horn willbe made to move a short distance to allow the feed to take place and to a greater distance when the machine is stoppedand'which isthe subject of, the divisional application hereinbe fore referred-to is effected through a rod 42 which is securedto a rack bar 44 operated by a ratchet mechanism of ordinary known construction. In order to obtain either the small downward movement or the greater. downward movement of the horn I provide a quasiswitcli mechanism.

This comprises two cam races 45; 46' in Which engage two. cam rollers. That in 45 moves a lever 47 which reciprocates through a large arc and-moves a link 48 vertically without, during the normal running off-the machine engaging with a block 49. The cam race 4.6 operates a lever 50 with a shorter arm which lifts at the proper time a r0d51 and consequently the pawl carrier of the ratchet gear.

This is the connection giving the short drop to the horn to allow of the work b ing moved along to feed (by the awl). WVhen however the operator releases a rod -52-(connected to a treadle) its downward-movement rocks a brake toggle 53 and the end of this moves outward and the hooked end of the link 48 engages with the block 49 and raises [the and carrier and consequently drops the horn to a greater distance than the normal distance securedby the movement of the rod .51. As the brake mechanism now comes into action the machine stops with this link at the top of its upward movement.-

hat Iclaim as my. invention and desire to secure by Letters Patent is i 1. In a slugging or nailing machine, the combination of a slug or nail d-rivingbar adapted to be reciprocated vertically, mechanism for feeding the work under said driving bar comprising an awl adapted to engage in the work and an awl carrier adapted to be reciprocated vertically and also horizontally, mean for reciprocating the said driving bar intermittently, and means for coupling the said awl carrier positively with the said driving bar to move therewith at predetermined times.

2. In a slugging or nailing machine, the combination of a slug or nail driving bar adapted to be reciprocated vertically, mechanism for feeding the work under said driving bar comprising an awl adapted to engage in the work and an awl carrier adapted to be reciprocated vertically and also horizontally, means for coupling and uncoupling the said awl carrier and driving bar at predetermined times, mean for reciprocating the said driving bar to a predetermined extent when coupled to the said aw]. carrier, and means for reciprocating the said bar to a greater extent when it is uncoupled from the said carrier.

3. In a slugging or nailing machine, the combination of a slug or nail driving bar adapted to be reciprocated vertically, mechanism for feeding the work under said driving bar comprising an awl adapted to engage in the work and an awl carrier adapted to be reciprocated vertically and also horizontally, a rocking lever for reciprocating the said carrier horizontally to couple and uncouple the said carrier and driving bar at predetermined times, a rotatable cam adapted to act upon the said lever to effect such reciprocation, and a rotatable cam disk formed with a face groove to receive a cam roll carried by the said driving bar and adapted to reciprocate the said bar twice during each revolution for the purposes set forth.

4. In a slugging or nailing machine, the combination of a slug or nall driving bar adapted to be reciprocated vertically, an awl carrier adapted to be reciprocated vertically and also horizontally, a rocking lever for reciprocatin the said carrier horizontally to couple anc uncouple the said carrier and driving bar at predetermined times, a rotatable cam which is provided with an adjustable porticn adapted to be adjusted nearer to or farther from the axis around which the cam rotates and is adapted to act upon the said lever to effect such reciprocation, and a rotatable cam disk formed with a face groove to receive a cam roll carried by the said driving bar and adapted to reciprocate the said bar to a predetermined extent when it is coupled to the awl carrier during one part of each revolution and to a greater extent when it is uncoupled from the awl carrier during the remaining part of the revolution.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MARK THOMAS DENNE.

WVitnesses:

A. E. WILLIAMS, M. POLLON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

